TY - JOUR
TI - Cooling analysis of a light emitting diode automotive fog lamp
AU - Zadravec Matej
AU - Ramšak Matjaz
AU - Ravnik Jure
AU - Hriberšek Matjaž
AU - Slanovec Jernej
JN - Thermal Science
PY - 2017
VL - 21
IS - 1
SP - 757
EP - 766
PT - Article
AB - Efficiency of cooling fins inside of a light emitting diode fog lamp is studied using computational fluid dynamics. Diffusion in heat sink, natural convection and radiation are the main principles of the simulated heat transfer. The Navier-Stokes equations were solved by the computational fluid dynamics code, including Monte Carlo radiation model and no additional turbulence model was needed. The numerical simulation is tested using the existing lamp geometry and temperature measurements. The agreement is excellent inside of few degrees at all measured points. The main objective of the article is to determine the cooling effect of various heat sink parts. Based on performed simulations, some heat sink parts are found to be very ineffective. The geometry and heat sink modifications are proposed. While radiation influence is significant, compressible effects are found to be minor.